Abstract
An influenza virus strain isolated in Northern Italy in 1977 was identified as belonging to the H3N2 subtype (A/swine/Italy/1850/77). A close antigenic relationship to the human strain A/England/42/72 was demonstrated. Serologic surveys of 548 pig sera from 53 farms in two provinces in Northern Italy demonstrated the existence of antibodies to the swine/Italy/1850/77 strain and to A/Hong Kong/1/68, A/Victoria/3/75 and H 1 N 1 (Hsw 1 N 1) strains in the pig population.
MeSH terms
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Animals
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Antibodies, Viral / analysis
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Antigens, Viral / immunology
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Epitopes
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Hemagglutination Inhibition Tests
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Influenza A Virus, H3N2 Subtype*
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Influenza A virus / classification
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Influenza A virus / immunology
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Influenza A virus / isolation & purification*
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Italy
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Neuraminidase / immunology
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Orthomyxoviridae Infections / microbiology
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Orthomyxoviridae Infections / veterinary*
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Serotyping
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Swine / microbiology
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Swine Diseases / microbiology*
Substances
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Antibodies, Viral
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Antigens, Viral
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Epitopes
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Neuraminidase